v4.19.13 snapshot.
diff --git a/drivers/s390/crypto/ap_card.c b/drivers/s390/crypto/ap_card.c
new file mode 100644
index 0000000..63b4cc6
--- /dev/null
+++ b/drivers/s390/crypto/ap_card.c
@@ -0,0 +1,191 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright IBM Corp. 2016
+ * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *
+ * Adjunct processor bus, card related code.
+ */
+
+#define KMSG_COMPONENT "ap"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <asm/facility.h>
+
+#include "ap_bus.h"
+
+/*
+ * AP card related attributes.
+ */
+static ssize_t hwtype_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ap_card *ac = to_ap_card(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", ac->ap_dev.device_type);
+}
+
+static DEVICE_ATTR_RO(hwtype);
+
+static ssize_t raw_hwtype_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ap_card *ac = to_ap_card(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", ac->raw_hwtype);
+}
+
+static DEVICE_ATTR_RO(raw_hwtype);
+
+static ssize_t depth_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ap_card *ac = to_ap_card(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", ac->queue_depth);
+}
+
+static DEVICE_ATTR_RO(depth);
+
+static ssize_t ap_functions_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ap_card *ac = to_ap_card(dev);
+
+ return snprintf(buf, PAGE_SIZE, "0x%08X\n", ac->functions);
+}
+
+static DEVICE_ATTR_RO(ap_functions);
+
+static ssize_t request_count_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ap_card *ac = to_ap_card(dev);
+ unsigned int req_cnt;
+
+ req_cnt = 0;
+ spin_lock_bh(&ap_list_lock);
+ req_cnt = atomic_read(&ac->total_request_count);
+ spin_unlock_bh(&ap_list_lock);
+ return snprintf(buf, PAGE_SIZE, "%d\n", req_cnt);
+}
+
+static ssize_t request_count_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ap_card *ac = to_ap_card(dev);
+ struct ap_queue *aq;
+
+ spin_lock_bh(&ap_list_lock);
+ for_each_ap_queue(aq, ac)
+ aq->total_request_count = 0;
+ spin_unlock_bh(&ap_list_lock);
+ atomic_set(&ac->total_request_count, 0);
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(request_count);
+
+static ssize_t requestq_count_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ap_card *ac = to_ap_card(dev);
+ struct ap_queue *aq;
+ unsigned int reqq_cnt;
+
+ reqq_cnt = 0;
+ spin_lock_bh(&ap_list_lock);
+ for_each_ap_queue(aq, ac)
+ reqq_cnt += aq->requestq_count;
+ spin_unlock_bh(&ap_list_lock);
+ return snprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt);
+}
+
+static DEVICE_ATTR_RO(requestq_count);
+
+static ssize_t pendingq_count_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ap_card *ac = to_ap_card(dev);
+ struct ap_queue *aq;
+ unsigned int penq_cnt;
+
+ penq_cnt = 0;
+ spin_lock_bh(&ap_list_lock);
+ for_each_ap_queue(aq, ac)
+ penq_cnt += aq->pendingq_count;
+ spin_unlock_bh(&ap_list_lock);
+ return snprintf(buf, PAGE_SIZE, "%d\n", penq_cnt);
+}
+
+static DEVICE_ATTR_RO(pendingq_count);
+
+static ssize_t modalias_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "ap:t%02X\n", to_ap_dev(dev)->device_type);
+}
+
+static DEVICE_ATTR_RO(modalias);
+
+static struct attribute *ap_card_dev_attrs[] = {
+ &dev_attr_hwtype.attr,
+ &dev_attr_raw_hwtype.attr,
+ &dev_attr_depth.attr,
+ &dev_attr_ap_functions.attr,
+ &dev_attr_request_count.attr,
+ &dev_attr_requestq_count.attr,
+ &dev_attr_pendingq_count.attr,
+ &dev_attr_modalias.attr,
+ NULL
+};
+
+static struct attribute_group ap_card_dev_attr_group = {
+ .attrs = ap_card_dev_attrs
+};
+
+static const struct attribute_group *ap_card_dev_attr_groups[] = {
+ &ap_card_dev_attr_group,
+ NULL
+};
+
+static struct device_type ap_card_type = {
+ .name = "ap_card",
+ .groups = ap_card_dev_attr_groups,
+};
+
+static void ap_card_device_release(struct device *dev)
+{
+ struct ap_card *ac = to_ap_card(dev);
+
+ if (!list_empty(&ac->list)) {
+ spin_lock_bh(&ap_list_lock);
+ list_del_init(&ac->list);
+ spin_unlock_bh(&ap_list_lock);
+ }
+ kfree(ac);
+}
+
+struct ap_card *ap_card_create(int id, int queue_depth, int raw_type,
+ int comp_type, unsigned int functions)
+{
+ struct ap_card *ac;
+
+ ac = kzalloc(sizeof(*ac), GFP_KERNEL);
+ if (!ac)
+ return NULL;
+ INIT_LIST_HEAD(&ac->list);
+ INIT_LIST_HEAD(&ac->queues);
+ ac->ap_dev.device.release = ap_card_device_release;
+ ac->ap_dev.device.type = &ap_card_type;
+ ac->ap_dev.device_type = comp_type;
+ ac->raw_hwtype = raw_type;
+ ac->queue_depth = queue_depth;
+ ac->functions = functions;
+ ac->id = id;
+ return ac;
+}